Absorbable marker wire
OwnerAdam J. Griebel, Jeremy E. Schafferinventors
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Abstract
A medical device is formed primarily of wires with limited radiopacity, such as magnesium, and has at least one fully absorbable radiopaque marker wire to enhance the radiopacity of the device. The fully absorbable radiopaque marker wire may include one or more elements with greater radiopacity than the primary wire, including zinc, iron, molybdenum, or tungsten. To prevent galvanic interactions between the marker wires and the magnesium wires, an absorbable polymeric coating may be applied to the absorbable marker wire.
Claims13
A medical device, comprising:
- a plurality of primary structural wires formed of a first absorbable metal or metal alloy;
- and
- at least one secondary marker wire formed of a radiopaque, second absorbable metal or metal alloy, each secondary marker wire coated with an absorbable polymeric material;
- and
- whereby the entire medical device is absorbable.
A wire for fully or partially absorbable medical devices used to enhance the device radiopacity, wherein the wire is fully absorbable and is coated with a polymer.
A method for producing a fully absorbable and partially radiopaque medical device, comprising:
- producing a tubular braid with a combination of primary absorbable wires and secondary polymer-coated absorbable marker wires;
- removing the braid from the mandrel;
- and
- heat treating the braid at a temperature slightly above the melting temperature of the absorbable polymer to fuse crossing points between the wires.
Dependencies are inferred from the claim text.